The first two wave types, P and S, are called body waves because they travel or propagate through the body of Earth. The latter two are called surface waves they the travel along Earth's surface and their amplitude decreases with depth into Earth.
Toysmith Spring Ring Game. Here is a super fun game the kids might like. Nordstrom has this Toysmith Spring Ring Game for $14.98! That is down from the normal price of $24.99, for a 40% savings.
The final cost, and how prices vary jeweler-by-jeweler: The cost for a new 4-prong white gold head, the labor to re-set the diamond, re-rhodium plate the white gold of her setting, and clean and polish the whole ring was $90. This is a very fair price for this work.